Human facial expressions differ from those of animals in the degree _________ they can be controlled on purpose.
We've been looking for a cheap house but haven't found ________ yet.
It makes good sense to buy a large packet because ________ will work out cheaper in the end.
—You look great! Were you on vacation or ________?—You got it. I've just come back from America.
Tom told me that he needed a chair and that soon he found ________.
I bought the train tickets at the station easily during the spring rush, though ________ of them ________ it.